20030112312 has 64 divisors (see below), whose sum is σ = 59202316800. Its totient is φ = 5525546880.

The previous prime is 20030112307. The next prime is 20030112313. The reversal of 20030112312 is 21321103002.

It is a junction number, because it is equal to n+sod(n) for n = 20030112291 and 20030112300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030112313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2050764 + ... + 2060507.

It is an arithmetic number, because the mean of its divisors is an integer number (925036200).

Almost surely, 2^20030112312 is an apocalyptic number.

It is an amenable number.

20030112312 is an abundant number, since it is smaller than the sum of its proper divisors (39172204488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20030112312 is a wasteful number, since it uses less digits than its factorization.

20030112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111316 (or 4111312 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20030112312 its reverse (21321103002), we get a palindrome (41351215314).

The spelling of 20030112312 in words is "twenty billion, thirty million, one hundred twelve thousand, three hundred twelve".